Stainless steel pressure gauge with easy maintenance

Abstract

The utility model discloses a stainless steel pressure gauge convenient to maintain relates to stainless steel pressure gauge technical field, including pressure gauge main part and three -way valve, the bottom of pressure gauge main part is fixed in three -way valve intercommunication, one side fixed intercommunication of three -way valve has the overhaul pipe, and the bottom of three -way valve is fixed intercommunication with gas pipeline. The utility model discloses through installing three -way valve between pressure gauge main part and gas pipeline, utilizes three -way valve to realize the intercommunication adjustment between pressure gauge main part and gas pipeline or overhaul pipe, makes pressure gauge main part when needing overhauling, only needs to pass through three -way valve and makes pressure gauge main part with overhaul pipe intercommunication, through the pipeline of conveying stable gas source and overhaul pipe butt joint, can according to the display numerical value on pressure gauge main part judges whether the failure appears, need not to dismantle pressure gauge main part from gas pipeline to improve the convenience of pressure gauge main part overhaul.

Description

Technical Field

[0001] This utility model relates to the technical field of stainless steel pressure gauges, and in particular to a stainless steel pressure gauge that is easy to maintain. Background Technology

[0002] Currently, stainless steel pressure gauges are installed on gas pipelines to monitor changes in gas pressure and ensure the safe operation of the gas delivery system.

[0003] Currently, stainless steel pressure gauges used in gas pipelines require regular inspection and maintenance to ensure their normal operation. However, current methods for disassembling and repairing these gauges on gas pipelines are cumbersome and hinder quick maintenance. Therefore, we propose a stainless steel pressure gauge that is easier to maintain. Utility Model Content

[0004] The purpose of this invention is to provide a stainless steel pressure gauge that is easy to maintain, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel pressure gauge that is easy to maintain, comprising: Pressure gauge body; A three-way valve is fixedly connected to the bottom of the pressure gauge body. A maintenance pipe is fixedly connected to one side of the three-way valve, and the bottom of the three-way valve is fixedly connected to the gas pipeline.

[0006] Preferably, the three-way valve includes: A valve housing, wherein a valve core is rotatably connected inside the valve housing, and a bushing is provided between the valve housing and the valve core; A lever is disposed on the outer wall of the valve housing and coaxially fixed with the valve core, so that the lever drives the valve core to rotate inside the valve housing.

[0007] Preferably, an upper connecting pipe is fixedly connected to the top of the valve body, the upper connecting pipe is threadedly connected to the bottom of the pressure gauge body, a lower connecting pipe is fixedly connected to the bottom of the valve body, the valve body is fixedly connected to the gas pipeline through the lower connecting pipe, and one end of the inspection pipe is fixedly connected to the side wall of the valve body.

[0008] Preferably, a switch valve is fixedly installed at the connection between the inspection pipe and the valve body, and a plug is inserted into the end of the inspection pipe away from the valve body.

[0009] Preferably, a blocking mechanism is provided between the upper connecting pipe and the pressure gauge body, the blocking mechanism being used to restrict the radial rotation of the pressure gauge body on the upper connecting pipe.

[0010] Preferably, the blocking mechanism includes: The upper pressure plate is fixedly connected to the bottom of the pressure gauge body; The lower pressure plate is movably sleeved on the outer wall of the upper connecting pipe, and both the lower pressure plate and the upper pressure plate have annular sawtooth grooves on opposite sides. A reset spring is located between the lower pressure plate and the valve housing and is movably connected to the upper connecting pipe.

[0011] The technical effects and advantages of this utility model are as follows: This invention adds a three-way valve between the pressure gauge body and the gas pipeline. The three-way valve enables the connection and adjustment between the pressure gauge body and the gas pipeline or maintenance pipe. When the pressure gauge body needs maintenance, it is only necessary to connect the pressure gauge body to the maintenance pipe through the three-way valve. By connecting the pipeline that delivers a stable gas source to the maintenance pipe, the display value on the pressure gauge body can be used to determine whether a fault has occurred. There is no need to disassemble the pressure gauge body from the gas pipeline, thus improving the convenience of pressure gauge body maintenance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point A.

[0014] Figure 3 This is a front cross-sectional view of the upper and lower pressure plates of this utility model.

[0015] Figure 4 This is a front cross-sectional view of the three-way valve of this utility model.

[0016] In the diagram: 100, pressure gauge body; 101, inspection pipe; 102, switch valve; 103, plug; 104, lower connecting pipe; 105, upper connecting pipe; 106, upper pressure plate; 107, lower pressure plate; 108, return spring; 200, three-way valve; 201, valve body; 202, valve core; 203, bushing; 204, lever. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figures 1-4The image shows a stainless steel pressure gauge that is easy to maintain.

[0019] Example 1: Includes a pressure gauge body 100 and a three-way valve 200. The three-way valve 200 is fixedly connected to the bottom end of the pressure gauge body 100. A maintenance pipe 101 is fixedly connected to one side of the three-way valve 200. The bottom end of the three-way valve 200 is fixedly connected to a gas pipeline. By installing the three-way valve 200 at the gas inlet port of the pressure gauge body 100 and installing the maintenance pipe 101 at the port position on the side wall of the three-way valve 200, the flow direction of the three-way valve 200 can be adjusted, allowing the pressure gauge body 100 to be in use through the three-way valve 200. The pressure gauge body 100 is connected to the gas transmission pipeline. When the pressure gauge body 100 needs to be repaired, it is only necessary to adjust the three-way valve 200 to connect the pressure gauge body 100 to the inspection pipe 101. With the constant pressure gas source introduced into the port of the inspection pipe 101, the reading of the pressure gauge body 100 at this time can be used to determine whether the pressure gauge body 100 has a fault. The repair process of the pressure gauge body 100 does not require disassembling the pressure gauge body 100, thereby improving the convenience and efficiency of the repair work of the pressure gauge body 100.

[0020] The three-way valve 200 includes a valve housing 201 and a lever 204. A valve core 202 is rotatably connected inside the valve housing 201. A bushing 203 is provided between the valve housing 201 and the valve core 202. The lever 204 is located on the outer wall of the valve housing 201 and is coaxially fixed with the valve core 202, so that the lever 204 drives the valve core 202 to rotate inside the valve housing 201. The valve core 202 has a T-shaped channel connecting its side wall. By rotating the valve core 202 inside the valve housing 201, the connection between the pressure gauge body 100 and the gas pipeline or inspection pipeline can be adjusted. Therefore, the pressure gauge body 100 does not need to be disassembled during use or maintenance, improving the convenience of use. The bushing 203 is provided to seal the position between the valve core 202 and the valve housing 201.

[0021] Furthermore, an upper connecting pipe 105 is fixedly connected to the top of the valve housing 201, and the upper connecting pipe 105 is threadedly connected to the bottom of the pressure gauge body 100. A lower connecting pipe 104 is fixedly connected to the bottom of the valve housing 201, and the valve housing 201 is fixedly connected to the gas pipeline through the lower connecting pipe 104. One end of the inspection pipe 101 is fixedly connected to the side wall of the valve housing 201, and a switch valve 102 is fixedly installed at the connection between the inspection pipe 101 and the valve housing 201. A plug 103 is inserted into the end of the inspection pipe 101 away from the valve housing 201. Through the arrangement of pipes 14 and 110 and the upper connecting pipe 105, the gas pipeline can be easily accessed. The connection between the gas pipeline, pressure gauge body 100, and inspection pipeline and the three-way valve 200 is described. The switch valve 102 installed on the inspection pipe 101 allows for convenient control of the opening and closing of the internal passage of the switch valve 102. In addition, the plug 103 installed at the port of the inspection pipe 101 can prevent the port of the inspection pipe 101 from being exposed to the outside for a long time and being contaminated, which would affect the airtightness when connected to the inspection gas source pipeline. It also prevents impurities in the inspection pipe 101 from being blown into the pressure gauge body 100 and causing malfunction of the pressure gauge body 100, thereby improving the safety of use.

[0022] Example 2: Based on Example 1, a blocking mechanism is provided between the upper connecting pipe 105 and the pressure gauge body 100. The blocking mechanism is used to restrict the radial rotation of the pressure gauge body 100 on the upper connecting pipe 105. The blocking mechanism includes an upper pressure plate 106, a lower pressure plate 107, and a return spring 108. The upper pressure plate 106 is fixedly connected to the bottom of the pressure gauge body 100, and the lower pressure plate 107 is movably sleeved on the outer wall of the upper connecting pipe 105. Both the lower pressure plate 107 and the upper pressure plate 106 have annular sawtooth grooves on opposite sides. The return spring 108 is located between the lower pressure plate 107 and the valve housing 201 and is movably sleeved on the upper connecting pipe 105. In this example, the upper connecting pipe 105 and the bottom port of the pressure gauge body 100 are connected by a threaded connection. During installation, press down on the lower pressure plate 107 to cause the lower pressure plate 107 to press down on the return spring 108, causing elastic deformation. This prevents the lower pressure plate 107 from contacting the upper pressure plate 106, ensuring the normal rotation of the pressure gauge body 100 at the top of the upper connecting pipe 105. This allows for quick installation of the pressure gauge body 100 at the port of the upper connecting pipe 105. Once the pressure gauge body 100 is securely installed at the port of the upper connecting pipe 105, release the pressure on the lower pressure plate 107. The elastic thrust provided by the return spring 108 causes the lower pressure plate 107 to move upward and engage with the upper pressure plate 106, thus restricting the rotation of the upper pressure plate 106. This ensures a secure installation of the pressure gauge body 100 when connected to the upper connecting pipe 105, preventing loosening of the pressure gauge body 100 at the port of the upper connecting pipe 105.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stainless steel pressure gauge that is easy to maintain, characterized in that, include: Pressure gauge body (100); A three-way valve (200) is fixedly connected to the bottom end of the pressure gauge body (100). A maintenance pipe (101) is fixedly connected to one side of the three-way valve (200). The bottom end of the three-way valve (200) is fixedly connected to the gas pipeline.

2. The stainless steel pressure gauge for easy maintenance according to claim 1, characterized in that, The three-way valve (200) includes: A valve housing (201) is provided, and a valve core (202) is rotatably connected inside the valve housing (201). A bushing (203) is provided between the valve housing (201) and the valve core (202). A lever (204) is disposed on the outer wall of the valve housing (201) and coaxially fixed with the valve core (202), so that the lever (204) drives the valve core (202) to rotate inside the valve housing (201).

3. The stainless steel pressure gauge for easy maintenance according to claim 2, characterized in that, The valve housing (201) is fixedly connected to an upper connecting pipe (105) at its top end. The upper connecting pipe (105) is threadedly connected to the bottom end of the pressure gauge body (100). The valve housing (201) is fixedly connected to a lower connecting pipe (104) at its bottom end. The valve housing (201) is fixedly connected to the gas pipeline through the lower connecting pipe (104). One end of the maintenance pipe (101) is fixedly connected to the side wall of the valve housing (201).

4. The stainless steel pressure gauge for easy maintenance according to claim 2, characterized in that, A switch valve (102) is fixedly installed at the connection between the inspection pipe (101) and the valve body (201), and a plug (103) is inserted into the end of the inspection pipe (101) away from the valve body (201).

5. The stainless steel pressure gauge for easy maintenance according to claim 3, characterized in that, A blocking mechanism is provided between the upper connecting pipe (105) and the pressure gauge body (100), the blocking mechanism being used to restrict the pressure gauge body (100) from rotating radially on the upper connecting pipe (105).

6. The stainless steel pressure gauge for easy maintenance according to claim 5, characterized in that, The blocking mechanism includes: Upper pressure plate (106), the upper pressure plate (106) is fixedly connected to the bottom of the pressure gauge body (100); The lower pressure plate (107) is movably sleeved on the outer wall of the upper connecting pipe (105). The lower pressure plate (107) and the upper pressure plate (106) are both annular sawtooth grooves on opposite sides. A reset spring (108) is located between the lower pressure plate (107) and the valve housing (201) and is movably connected to the upper connecting pipe (105).

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